Python中的for循环,codecademy

for --loop

for number in list:
#do

start_list = [5, 3, 1, 2, 4]
square_list = []

for n in start_list:
square_list.append(n ** 2)
square_list.sort()
print square_list

list = array

dictionary = hash

dictionary = {'key1' : 1, 'key2' : 2 , 'key3' : 3}
dictionary for

webster = {
"Aardvark" : "A star of a popular children's cartoon show.",
"Baa" : "The sound a goat makes.",
"Carpet": "Goes on the floor.",
"Dab": "A small amount."
}
for k in webster:
print webster[k]

#A star of a popular children's cartoon show.
#Goes on the floor.
#A small amount.
#The sound a goat makes.

remove的用法(删除特定元素)

a = ['gg','tt','ty']
a.remove('gg')
print a
#['tt','ty']

del的用法（删除index）

a = ['gg','tt','ty']
del a[1]
print a
#['tt','ty']

本文出自 “杨柳岸” 博客，请务必保留此出处http://jackzones.blog.51cto.com/5001676/1722947